Lasting machines



Jan. 22, 1957 R. HUBBARD 2,778,039

LASTI NG MACHINES Filed Sept 23, 1955 Y 2 Sheets-Sheet 1 Inventor Ari/1w" fi. Hubbard 5 his 1 Jan. 22, 1957 R. HUBBARD 2,778,039

LASTING MACHINES Filed Sept. 23) 1955 2 Sheets-Sheet 2 Q 9 Q m f 0 #4 147 3a j m 6 r IVA W/ 7 1 110812 for lull! 62 lii q. 90 Arfhur'Rfiz/bbard United States Patent LASTING MACHINES Arthur R. Hubbard, Beverly, Mass., assignor to United Shoe Machinery Corporation, Flemington, N. 1., a corporation of New Jersey Application September 23, 1955, Serial No. 536,182

18 Claims. (Cl. 12-12) This invention relates to lasting machines and is more particularly concerned with certain improvements in the wiping means of a lasting machine of the type shown and disclosed in United States Letters Patent No. 2,665,436, granted January 12, 1954, on an application filed in the name of Bernhardt Jorgensen. It will be understood, however, that in their broader aspects the several features of this invention are not limited to use in a lasting machine of the type shown in the mentioned patent or to embodiment in the exact mechanical constructions herein illustrated.

The lasting machine disclosed in the mentioned patent is provided with wiping means for operating on the opposite sides of a shoe at the same time, each of these wiping means comprising a pair of wipers which are relatively movable in directions extending lengthwise of the shoe and which include a relatively thin wiper made of resiliently flexible material for engaging the upper in locations where the bottom of the shoe curves heightwise of the shoe toward the shank portion beyond the ball line. These flexible wipers are formed with a normal lengthwise curvature generally approximating that of the corresponding portion of the bottom of a shoe and, to render them more effective in wiping the upper inwardly and for pressing it against the insole, the machine of the aforementioned patent is provided with fluid pressure operated means for automatically bending these Wipers heightwise of the shoe toward the shoe bottom. As is illustrated in the mentioned patent, in this prior construction one end of each of the flexible wipers is secured to a wiper supporting member by means including a pair of'screws, while fastened to the other end of each of these flexible wipers is a block against which a plunger, actuated by the fluid pressure operated means for bending the wipers, is adapted to bear. While the wiping means disclosed in the mentioned patent has proved to be quite effective for its intended purpose, there is some tendency for the outwardly directed forces which are applied to the inner edge of each flexible wiper, during the wiping operation, to subject the wiper to a very severe twisting stress, inasmuch as the end of the wiper to which the pressure block is secured is substantially unsupported against forces applied in that direction, While the other end of the wiper is fastened to the wiper supporting member. Also because of the manner in which the last-mentioned end of each flexible wiper is fastened to the wiper supporting member, it is somewhat diflicult for an operator to remove these wipers and replace them with others as he may be required to do in order to accommodate difierent operating conditions or to replace broken or otherwise damaged wipers.

It is a principal object of the present invention to provide a novel and improved Wiper construction for use in a machine of the aforementioned type wherein the resiliently flexible wipers are more effectively supported on the wiper supporting members in such a way that there is no tendency for the wipers to be subjected to twisting stresses and, at the same time, so that these wipers may be quite readily removed and replaced when occasion requires. With this purpose in view, in the herein illustrated construction one end of each of the resiliently flexible wipers is slotted and each wiper supporting member is provided with an abutment which is so shaped as to receive a slotted end of the wiper only when the wiper is in a predetermined angular position and rotatably to hold that end of the wiper when the wiper is in other angular positions, while the other end of the wiper is supported on a block which is so located that when the wiper is fastened thereto it is displaced from the mentioned predetermined angular position. Therefore, in order to remove and replace the wiper, all the operator has to do is to unfasten one end of the wiper from the block and then turn it to the predetermined angular position, whereupon its other end may be removed from the abutment on the wiper supporting member. Preferably, and in accordance with further features 'of the invention, the aforementioned block is provided with an inclined pressure surface and there is pivotally mounted on each wiper supporting member a pressure member having a projecting portion for engaging the inclined pressure surface on the block, this pressure member being arranged to be swung on the wiper supporting member by fluid pressure actuated means, similar to that provided in the patented arrangement, for moving the block and that end of the wiper which is supported thereon toward the bottom of the shoe. Furthermore, extending between the wiper supporting member and the block there is a strut member which is arranged to support the block, together with that end of the wiper which is secured thereto, against outward movement in response to the forces applied to the inner end of the wiper during the wiping operation. Preferably, and as herein illustrated, spring means is provided for holding each of these blocks yieldingly in position with its inclined pressure surface in engagement with the projecting portion on the associated pressure member. With this improved arrangement for mounting and operating each of the resiliently flexible wipers, there is no tendency for the forces applied to the wipers during the lasting operation to exert a twisting action on the wipers and, because of the manner in which each pressure .member is pivotally mounted on its wiper supporting member and as a result of the action of the strut members on the wiper supporting blocks as these blocks are moved toward the bottom of the shoe by the pivotally mounted pressure members, the resiliently flexible wipers are rendered much more effective for wiping the upper materials inwardly over, and for pressing these materials against, the bottom of the shoe.

The above and other objects and features of the invention will be apparent in the following detailed description of the preferred embodiment thereof which is illustrated in the accompanying drawings, and will be pointed out in the claims.

In the drawings,

Fig. 1 is a plan view of a portion of a lasting machine provided with wiping means embodying the features of this invention;

Fig. 2 is a view in section substantially on line lI-II of Fig. l and looking in the direction of the arrows;

Fig. 3 is a view in end elevation of a portion of one of the wiping mechanisms shown at an enlarged scale and with certain par-ts in vertical section; I

Fig. 4 is a view in side elevation of one of the wiping mechanisms;

Fig. 5 is a plan view of a portion of the wiper mechanism shown in Fig. 4, as viewed from above the wiper; and

Fig. 6 is a view in section substantially on line VI-VI of Fig. 4 and looking in the direction of the arrows.

Referring to Fig. 1, this is a view of a portion of a lasting machine which is similar to that disclosed in the Iorgensen patent referred to above, this view corresponding to Fig. 2 of the patent and showing the two wiping mechanisms which are provided in the machine for operating on the opposite sides of ashoe. These wiping means are exactly alike except that one is adapted to operate on one side of a shoe while the other is adapted tooperate on the opposite side of the shoe. Each wipingmeans is associated with a lever 26 which'is mounted "to swing in a direction extending widthwise ofthe shoe being lasted about a stud 22, these two levers being interconnected by gear teeth 24,26 which are formed oninwardly extending portions of the levers.

In common with the arrangement disclosed in the Iorgensen patent, each wiping means includes what may be termed a forepart wiper 30 and a ball wiper 32, these wiperscorresponding respectively tothe wipers 162 and 178"C f the patented construction? 'As in the *prior arrangement, the wipers 30, 30 are movable relatively to the wipers 32; 32 under the control of operating links 34, 34 each of which is connected at one end to a wiper 30 and at its other end to a crosshead 36. This crosshead is mounted for sliding movement on a supporting member 38 against the yielding resistance which is provided by an arm '49 and a coil spring 42, seen also Fig. 2, and in response tothe pressure of a shoe presented to the machine against an abutment, not shown, associated with'the" crosshead, in the same manner and for the same purpose as is set forth in the Iorgensen patent. i Referring especially to Figs. 3 and 6, there is secured to each of the arms 20, in spaced relation thereto, by means of bolts 50 and spacers 52,"a supporting 'member 54- which is provided with an electric heat unit 56. 'As will be seen in Fig. 1, the bolts 50 extend through slots in the members 54 so that these members may be readily removed from the levers 20 upon the loosening of the nuts which are associated with the bolts 56. Each of the wipers 30 is slidably mounted on its associated "supporting'member 54 by means of a tongue 65 and groove 62, Fig. 6, and is held in place thereon by means of a keeper plate 64 and screws 66, Fig. 3. Also held in'jplace'by the screws 66 are spring fingers 68 which assist in holding the links 34 on pins 75) carried by the wipers 30, see Figs l and 4. At one end, Fig. 5, each of the ball wipers 32 is providedwilh a slot 72 having a narrowed opening 74. Mounted on each of the supporting members 54 is an abutment 76 which is provided with agenerally cylindrical stemLZS and a base portion 86 of larger diameter. The cylindrical portion of each of these abutments is flattened at its opposite sides as indicated at 82, 82, so hQ 'the slotted end'of a wiper 32 may be placed thereon or'cr emoved therefrom when the wiper is swung 'to' onepredetermined angular position. Inall other angularpositions the wiper is rotatably held on the abutment-and, forretaining each wiper on itsassociate'd abutment against axialrnovement thereon, a spring clip 84 is provided, 'jth'is clip'being heldini plaice by a screwfdd secures the abutment to the supporting member54l.

Pivotally mounted by means of a pin 90 on theouter end of each supporting member 54 is a pressure member 9:2"..E ahaving a do n a d Pr te t port on. The projecting portion of each of these pres suren'iembe'rs bears against an inclined pressure surface 96"formed on ablock 97 to which the 'end' of one "of the wipers32, 'op posite to its slotted end, is secured by means of a clamp member 98 and screw 100. Also secured to each of the blocks 97 is a leaf spring 192 having a free end 164 which projects,. over the pin 9%, this spring tending to hold'the block 97 yieldingly up in the position shown in Fig. 4 with-the surface 96 in engagement with the projection 94 on the pressure member 92. Fastened to each of the members 92 is a block 166 which has an end portion extending downwardlybeyond the pin and the. free end 104 ofthe spring'102,.as shown in Fig. 4, to hold these parts in place. Secured to each of the supporting is a bracket member 120, Fig. 4, having formed integrally therewith a cylinder 122,'Fig. 3. Fitted within a bore 124 in each of these cylinders is a piston 126 having a rod 128 which extends through a clearance hole 130 formed in an end portion 132 of the cylinder. Each of these rods is connected to a crosshead 134 which is slidably mounted in an open-ended bore 136 formed in the cylinder 122. At itsoutenen'd, each of the crossheads 134 is provided with a laterally extending flange 138 which is normally held in engagement with the outer end of the cylinder 122 by means of a return spring 140 associated with each of the pistons 126. Pivotally mounted on a portion of each "of the brackets 120' is a bell-crank lever 142 on one 'arm of which there, is pivotally mounted a trunnionblock 144, Fig. 3. Extending through a bore in each trunnion block there is a rod 146 which is connected at one end to one of the crossheads 134 and which has a nut 148 threaded on its 'other end. Surrounding this rod and'interposed between the trunnion block 144 and the crosshead 134 is a compression yield spring 147. The other'arm of each ofthese bell-crank levers is provided with a socket 149 for receiving one end of a thrustlink 150, Fig. 3, the otherend of which is 'receivedin a recess1'52, formed in one of the pressure 'members'92, Fig.4.

I Connected to the bore 124 of each cylinder 122 there is a conduit which, at certain times in the course of the operating cycle of the lasting machine is connected to a source of fluid under pressure. Pivotally mounted on each of the cylinders 122 is a latch member. 162, Fig. l, which normally engages flange 138cm crosshead 134, these latches thus preventing'movement of the pistons 126 and operation of ,the' bell crank levers 142 when fluid under pressure is admitted to the cylindrical bores 124 behind the, pistons .126.' As. is explained more particularlyin the lorgensenpatent referred to above, these latches are opened to release the pistons 126 and hence the bell-crank levers 142 to the action of the operating fluid at a predetermined time in the operating cycle of the lasting machine. For returning operating fluid which may leak past the pistons'126,drain passages and conduits 172 are provided, see Fig. 3. v v h The improved wipingm'eans described above operates generally Linthe same manner as .thewiping means dis: closed in the aforementioned Jorgensen patent. However, because ofthe fact thatone end of each of the ball wipersv 321s rotatably held on an. abutment 76 while its other end is fastened toa block 9 7 and isth us held against outward movement, the forces which are applied to the inner edges of these ball wipers,during the operation of the wiping means, have no tendency at; all tos ubject these ball wipers to a twisting stress. In addition, with this improved arrangement, the rernoval and replacem nt f v21.112111 w er is ret sas l ef cted y the op atormerely by loosening theclamp member 98, thereby freeing one endof the wiper, and then swinging the wiper to the angular position in which its other end can .be removed from the: abutmenton the wiper supporting member. Moreover, since oneend of each ball wiper 32 can rock and turn on its associatedabutment 98, these wipers can more readily, conform to the contour ofthe bottom 9f the shoe Referriuggto Fig. 3, it ..wi ll.-.be,.observed thatwhen a ball wiper 32tis (inflectedv onbentin a directionextending heightwise oftheshoe being lasted by the'fluid actuated meansassociated therewith,-.theablock 97 to which-one 611d:Of'*lIl1B?WiperJiS fastened, zaszitrmoves downwardly, is also; forced .inwardlyas a result'of;a toggle actionof the strut 112, thereby providing a desirable inwiping eflect at that end of the wiper. Also, as the projection 94 of the pivotally mounted pressure member 92 acts on the inclined pressure surface 96 on the block 97, it has a definite tendency to wedge the block 97 toward the toe end of the shoe being lasted, i. e., toward the left as viewed in Fig. 4. These two actions of the wiper supporting blocks 97 tend to press the deflected portions of the ball wipers more firmly and more forcibly against the upper materials in the curved shank portion of the shoe and thereby tend to improve and enhance the actions of these Wipers in wiping the upper materials inwardly over and for pressing these materials against the bottom of the shoe. The spring 102 tends to hold the block 97 in the position shown in Fig. 4 and thus, as the pressure member 92 is swung about its pivot by the action of link 150, this spring momentarily causes the flexible wiper 32 to bend about a. vertical axis in line with the pin 90 and hence delays, for an instant, the downward deflection of that part of the flexible wiper which is directly below the pin. This momentary delay in the downward deflection of that portion of the wiper avoids any tendency of the wiper to strike the side of the shoe above the edge of the innersole.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a lasting machine having a wiper supporting member and a wiper carried by said member and adapted to wipe the marginal portion of the upper of a shoe inwardly over an insole on its last, means for removably connecting said wiper to the wiper supporting member comprising an abutment secured to said member, one end of the wiper and said abutment being so shaped that the abutment will receive said one end of the wiper only when said wiper is in a predetermined angular position and will hold that end of the wiper when the wiper is in other angular positions, a block for supporting the other end of the wiper associated with said wiper supporting member, and means for fastening the other end of the wiper to said block, said block being so located that when the other end of the wiper is fastened thereto the wiper is displaced from said predetermined angular position.

2. In a lasting machine having a wiper, supporting member and a resiliently flexible wiper carried by said member and adapted to wipe the marginal portion of the upper of a shoe inwardly over an insole on its last at the ball portion of the shoe, means for removably connecting said wiper to the wiper supporting member comprising an abutment secured to said member and so shaped as to receive one end of the wiper only when said wiper is in a predetermined angular position and to hold that end of the wiper when the wiper is in other angular positions, a block for supporting the other end of the wiper associated with the wiper supporting member, and means for fastening the other end of the wiper to said block, said block being so located that when the other end of the wiper is fastened thereto the wiper is displaced from said predetermined angular position.

3. In a lasting machine having a wiper supporting member and a wiper carried by said member and adapted to wipe the marginal portion of the upper of a shoe inwardly over an insole on its last, said wiper having a slotted end, means for removably connecting said wiper to the wiper supporting member comprising an abutment secured to said member, said abutment being generally circular in cross section with two diametrically opposed flat portions adapted laterally to receive the slotted end of the wiper only when said wiper is in a predetermined angular position and to hold that end of the Wiper against lateral movement relatvely to the abutment when the wiper is in other angular positions, a block for supporting the other end of the wiper associated with the wiper supporting member, and means for fastening the other endof the wiper tosaid block, said block being so located that when the other end of the wiper is fastened thereto the wiper is displaced from said, predetermined angular position. i v

4. In a lasting machine having a wiper supporting merriber and a resiliently flexible wiper carried by said member and adapted to wipe the marginal portion of the upper of a shoe inwardly over an insole on its last at the ball portion of the shoe, said wiper having a slotted end, means for removably connecting the wiper to thewiper supporting member comprising an abutment secured to said. member, said abutment being generally circular in cross section with two diametrically opposed fiat portions and adapted laterally to receive the slotted end of the wiperonly when said wiper is in a predetermined angular position and to hold that end of the wiper against lateral movement, relatively to the abutment, when the wiper is in other angular positions, means for preventing movement of the slotted end of the wiper axially of the abutment, at block for supporting the other end of the wiper associated with the wiper supporting member, and means for fastening the other end of the wiper to said block, said block being so located that when the other end of the wiper is fastened thereto the wiper is displaced from said predetermined angular position.

5. In a lasting machine having a wiper supporting member an a wiper carried by said member and adapted to wipe the marginal portion of the upper of a shoe inwardly over an insole on its last, means for connecting one end of the wiper to said supporting member, a block for supporting the other end of the wiper and provided with an inclined pressure surface, a pressure member pivotally mounted on the wiper supporting member and having a projecting portion for engaging said pressure surface, and operating means for causing said pressure member to swing on the wiper supporting member and thereby move the block together with that end of the wiper which is supported thereon toward the bottom of the shoe.

6. In a lasting machine having a wiper supporting member and a resiliently flexible wiper carried by said member and adapted to wipe the marginal portion of the upper of a shoe inwardly over an insole on its last, means for connecting one end of the wiper to said supporting member, a block for supporting the other end of the wiper and provided with an inclined pressure surface, a pressure member pivotally mounted on the wiper supporting member and having a projecting portion for engaging said pressure surface, and operating means for causing said pressure member to swing on the wiper supporting member and thereby move the block together with that end of the wiper which is supported thereon toward the bottom of the shoe.

7. In a lasting machine having a wiper supporting member an a wiper carried by said member and adapted to wipe the marginal portion of the upper of a shoe inwardly over an insole on its last, means for connecting one end of the wiper to said supporting member, a block for supporting the other end of the wiper and provided with a pressure surface, a strut member pivotally mounted at one end on said wiper supporting member and at the other end on said block, a pressure member pivotally mounted on the wiper supporting member and having a projecting portion for engaging said pressure surface, and operating means for causing said pressure member to swing on the wiper supporting member and thereby move the block together with that end of the wiper which is supported thereon toward the bottom of the shoe.

8. In a lasting machine having a wiper supporting member and a resiliently flexible wiper carried by said member and adapted to wipe the marginal portion of the upper of a shoe inwardly over an insole on its last, means for connecting one end of the wiper to said supporting member, a block for supporting the other end of the wiper and provided with a pressure surface, a strut member pivotally mounted at one end on said wiper supporting member and at its other end on said block, a pressure member pivotally mounted on the wiper supporting member and having a projecting portion for engaging said pressure surface, and operating means for causing said pressure member to swing on the wiper supporting member and thereby move the block together with that end of the wiper which is Supported thereon toward the bottom of the shoe.

9. In a lasting machine having a wiper supporting member and a wiper carried by said member and adapted to wipe the marginal portion of the upper of a shoe inwardly over an insole on its last, means for connecting one end of the wiper to said supporting member, a block for supporting the other end of the wiper and provided with an inclined pressure surface, a strut member pivotally mounted at one end on said wiper supporting member and at its other end on said block, a pressure member pivotally mounted on the wiper supporting member and having a projecting portion for engaging said pressure surface, and operating means for causing said presure member to swing on the wiper supporting member and thereby move the block together with that end of the wiper which is supported thereon toward the bottom of the shoe.

10. In a lasting machine having a wiper supporting member and a resiliently flexible wiper carried by said member and adapted to wipe the marginal portion of the upper of a shoe inwardly over-an insole on its last, means for connecting one end of the wiper to said supporting member, a block for supporting the other end of the wiper and provided with an inclined pressure surface, a strut member pivotally mounted at one end on said wiper supporting member and at its other end on said block, a pressure member pivotally mounted on the wiper supporting member and having a projecting portion for engaging said pressure surface, and operating means for causing said pressure member to swing on the wiper supporting member and thereby move the block together with that'end of the wiper which is supported thereon toward the bottom of the shoe.

11. In a lasting machine having a wiper supporting member and a wiper carried by said member and adapted to wipe the marginal portion of the upper of a shoe inwardly over an insole on its last, means for connecting one end of the wiper to said supporting member, a block for supporting the other end of the wiper and provided with a pressure surface, a pressure member pivotally mounted on the wiper supporting member and having a projecting portion for engaging said pressure surface, means associated with said block and said wiper supporting member for yieldingly holding said block in position with said pressure surface in engagement with the projecting portion on said pressure member, and operating means for causing said pressure member to swing on the wiper supporting member and thereby move the block together with that end of the wiper which is supported thereon toward the bottom of the shoe.

' 12. in a lasting machine having a wiper supporting member and a resiliently flexible wiper carried by said member and adapted to wipe the marginal portion of the upper of a shoe inwardly over an insole on its last, means for connecting one end of the wiper to said supporting member, a block for supporting the other end of the wiper and provided with a pressure surface, a pressure member pivotally mounted on the wiper supporting member and having a projecting portion for engaging said pressure surface, means associated with said block and said wiper supporting member for yieldingly holding said block in position with said pressure surface in engagement with the projecting portion on said pressure member, and operating means for causing said pressure member to swing on the wiper supporting member and thereby move the block together with that end of the wiper which is supported thereon toward the bottom of the shoe.

13. In a lasting machine having a wiper supporting member and a wiper carried by said member and adapted to wipe the marginal portion of the upper of a shoe inwardly over an insole on its last, means for connecting one end of the wiper to said supporting member, a block for supporting the other end of the wiper and provided with an inclined pressure surface, a pressure member pivotally mounted on the wiper supporting member and having a projecting portion for engaging said pressure surface, means associated with said block and said wiper supporting member for yieldingly holding said block in position with said pressure surface in engagement with the projecting portion on said pressure member, and operating means for causing said pressure member to swing on the wiper supporting member and thereby move the block together with that end of the wiper which is supported thereon toward the bottom of the shoe.

14-. In a lasting machine having a wiper supporting member and a resiliently flexible wiper carried by said member and adapted to wipe the marginal portion of the upper of a shoe inwardly over an insole on its last, means for connecting one end of the wiper to said supporting member, a block for supporting the other end of the wiper and provided with an inclined pressure surface, a pressure member pivotally mounted on the wiper supporting member and having a projecting portion for engaging said pressure surface, means associated with said block and said wiper supporting member for yieldingly holding said block in position with said pressure surface in engagement with the projecting portion on said pressure member, and operating means for causing said pressure member to swing on the wiper supporting member and thereby move the block together with that end of the wiper which is supported thereon toward the bottom of the shoe.

15. In a lasting machine having a wiper supporting member and a wiper carried by said member and adapted to wipe the marginal portion of the upper of a shoe inwardly over an insole on its last, means for connecting one end of the wiper to said supporting member, a block for supporting the other end of the wiper and provided with a pressure surface, a strut member pivotally mounted at one end on said wiper supporting member and at the other end on said block, a pressure member pivotally mounted on the wiper supporting member and having a projecting portion for engaging said pressure surface, means associated with said block and said wiper supporting member for yieldingly holding said block in position with said pressure surface in engagement with the projecting portion on said pressure member, and operating means for causing said pressure member to swing on the wiper supporting member and thereby move the block together with that end of the wiper which is supported thereon toward the bottom of the shoe.

16. In a lasting machine having a Wiper supporting member and a resiliently flexible wiper carried by said member and adapted to wipe the marginal portion of the upper of a shoe inwardly over an insole on its last, means for connecting one end of the wiper to said supporting member, a block for supporting the other end of the wiper and provided with a pressure surface, a strut member pivotally mounted at one end on said wiper supporting member and at the other end on said block, a pressure member pivotally mounted on the wiper supporting member and having a projecting portion for engaging said pressure surface, means associated with said block and said wiper supporting member for yieldingly holding said block in position with said pressure surface in engagement with the projecting portion on said pres sure member, and operating means for causing said pressure member to swing on the wiper supporting member and thereby move the block together with that end of the wiper which is supported thereon toward the bottom of the shoe.

17. In a lasting machine having a wiper supporting member and a wiper carried by said member and adapted to wipe the marginal portion of the upper of a shoe mwardly over an insole on its last, means for connecting one end of the wiper to said supporting member, a block for supporting the other end of the wiper and provided with an inclined pressure susface, a strut member pivotally mounted at one end on said wiper supporting member and at its other end on said block, a pressure member pivotally mounted on the wiper supporting member and having a projecting portion for engaging said pressure surface, means associated with said block and said wiper supporting member for yieldingly holding said block in position with said pressure surface in engagement with the projecting portion on said pressure member, and operating means for causing said pressure member to swing on the wiper supporting member and thereby move the block together with that end of the wiper which is supported thereon toward the bottom of the shoe.

18. In a lasting machine having a wiper supporting member and a resiliently flexible wiper carried by said member and adapted to wipe the marginal portion of the upper of a shoe inwardly over an insole on its last, means for connecting one end of the wiper to said supporting member, a block for supporting the other end of the wiper and provided with an inclined pressure surface, a strut member pivotally mounted at one end on said wiper supporting member and at its other end on said block, a pressure member pivotally mounted on the wiper supporting member and having a projecting portion for engaging said pressure surface, means associated with said block and said wiper supporting member for yieldingly holding said block in a position with said pressure surface in engagement with the projecting portion on said pressure member, and operating means for causing said pressure member to swing on the wiper supporting member and thereby move the block together with that end of the wiper which is supported thereon toward the bottom of the shoe.

References Cited in the file of this patent UNITED STATES PATENTS 2,665,436 Jorgensen Jan. 12, 1954 

